package com.jclark.xsl.expr;

import com.jclark.xsl.om.*;

class NotFunction extends Function1 {
  ConvertibleExpr makeCallExpr(ConvertibleExpr e) {
    final BooleanExpr be = e.makeBooleanExpr();
    return new ConvertibleBooleanExpr() {
      public boolean eval(Node node, ExprContext context) throws XSLException {
	return !be.eval(node, context);
      }
    };
  }
}